<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>Document</title>
    </head>
    <body>
        
    </body>
    <script>
        // 模板获取
        // 生成器函数在异步任务中的表现
        function getUsers(){
            setTimeout(()=>{
                let data = "用户数据";
                // 调用next方法 并且将数据传入
                iterator.next(data);
            },1000)
        }
        function getOrders(){
            setTimeout(()=>{
                let data = "订单数据";
                iterator.next(data);
            },1000)
        }
        function getGoods(){
            setTimeout(()=>{
                let data = "商品数量";
                iterator.next(data);
            },1000)
        }
        function * gen(){
            let users = yield getUsers();
            console.log(users);
            let orders = yield getOrders();
            console.log(orders);
            let goods = yield getGoods();
            console.log(goods);
        }
        let iterator = gen();
        iterator.next();
    </script>
</html>